Earthquake · reviewed by a seismologist
M 2.7md
Earthquake near Corralitos, CA
No earthquake was likely felt in Corralitos in the 24 hours to 10:54 pm PST (06:54 UTC). The last one was M 2.4, 20 km (12 mi) ESE, at 12:04 pm PDT on 22 October 2026, estimated intensity II (weak) in town. Every earthquake near Corralitos
This page: a magnitude 2.7 earthquake was recorded 5 km (3 mi) north-northeast of Corralitos, CA, at 12:36 am PST on 27 February 2024 (08:36 UTC), 2.4 km deep. 52 people have reported feeling it to USGS.
USGS: 5 km NNE of Corralitos, CA
30 km (19 mi) S of San Jose, CA · 12 km (7 mi) N of Watsonville, CA
- When
- 12:36 am PST on 27 February 2024 ()
- Where
- 5 km (3 mi) north-northeast of Corralitos, CA · earthquakes near Corralitos
- Magnitude
- M 2.7 (md)
- Depth
- 2.4 km below the surface
- Felt
- 52 reports · strongest reported intensity III
- Nearest
- Santa Cruz County, 20 km W
- Nearest mapped fault
- San Andreas fault, under 1 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 915 days ago
Earthquake alerts for Corralitos, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 25 km (16 mi) from the epicentre. In Corralitos, 5 km away, the estimate is intensity III (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Likely felt in: Watsonville 13 km, intensity II · Morgan Hill 16 km, intensity II · Capitola 17 km, intensity II · Live Oak 19 km, intensity II · Gilroy 19 km, intensity II · Scotts Valley 21 km, intensity II · Santa Cruz 23 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 320 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 48,000× the energy of this one
- Magna, Utah 2020 M 5.7 34,000× the energy of this one
- Around the size people start to feel M 3.0 3× the energy of this one
- This earthquake M 2.7 about 320 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
The largest earthquake within 50 km since 2016 was M 5.1 on 2022-10-25 — about 3,700 times the energy of this one.
Before 2016, the USGS record lists 31 earthquakes of M5 or more within 50 km; the five largest:
- 6.9 The 1989 Loma Prieta, California Earthquake · 9 km W of this epicentre
- 6.5 Near Morgan Hill, California · 16 km NE of this epicentre
- 6.3 22 km S of Davenport, California · 45 km WSW of this epicentre
- 6.2 Near San Jose, California · 30 km N of this epicentre
- 6.2 The 1984 Morgan Hill, California Earthquake · 33 km NNE of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 37.0280, -121.7783. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Santa Cruz County, CA | 20 km (13 mi) | W | earthquakes near Santa Cruz County |
| Santa Clara County, CA | 23 km (14 mi) | NNE | earthquakes near Santa Clara County |
| San Mateo County, CA | 68 km (42 mi) | NW | earthquakes near San Mateo County |
| Alameda County, CA | 70 km (43 mi) | N | earthquakes near Alameda County |
| San Benito County, CA | 77 km (48 mi) | SE | earthquakes near San Benito County |
| Stanislaus County, CA | 91 km (56 mi) | NE | earthquakes near Stanislaus County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
40 earthquakes have been recorded within 50 km since this one.
- 1.6 7 km N of Day Valley, CA
- 2.8 16 km E of Seven Trees, CA
- 1.6 8 km ENE of Gilroy, CA
- 1.6 9 km E of Gilroy, CA
- 1.5 16 km N of Morgan Hill, CA
- 2.4 8 km NE of Gilroy, CA
- 1.7 7 km ENE of Gilroy, CA
- 2.7 8 km NE of Gilroy, CA
- 1.6 15 km SSW of Bonny Doon, CA
- 2.1 1 km ESE of Aromas, CA
- 3.0 15 km N of Morgan Hill, CA
- 1.6 11 km SW of Ridgemark, CA
- 2.5 6 km SSW of Gilroy, CA
- 1.7 16 km E of Seven Trees, CA
- 1.8 12 km SW of Ridgemark, CA
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.